/*
 * Copyright [2021-present] [ahoo wang <ahoowang@qq.com> (https://github.com/Ahoo-Wang)].
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *      http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package me.ahoo.wow.elasticsearch.query

import co.elastic.clients.elasticsearch._types.SortOptions
import co.elastic.clients.elasticsearch._types.SortOrder
import me.ahoo.wow.api.query.Sort
import me.ahoo.wow.query.converter.SortConverter

object ElasticsearchSortConverter : SortConverter<List<SortOptions>> {
    override fun convert(sort: List<Sort>): List<SortOptions> {
        return sort.map {
            SortOptions.of { sortBuilder ->
                sortBuilder.field { fieldBuilder ->
                    fieldBuilder.field(it.field).order(it.direction.toSortOrder())
                }
            }
        }
    }

    fun Sort.Direction.toSortOrder(): SortOrder {
        return when (this) {
            Sort.Direction.ASC -> SortOrder.Asc
            Sort.Direction.DESC -> SortOrder.Desc
        }
    }

    fun List<Sort>.toSortOptions(): List<SortOptions> {
        return convert(sort = this)
    }
}
